Front portion of an automobile



FIG. 1 is a front left perspective view of a front portion of an automobile of our new design;

FIG. 2 is a front right perspective view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a front view thereof, the rear view being a mirror image thereof; and,

FIG. 6 is a top plan view thereof.

The portion of the vehicle in light contrast is environment and is not a part of the claimed design. 

The ornamental design for a front portion of an automobile, as shown and described. 